Electric switch



L. F. KRIES.

ELECTRIC SWITCH.

APPLICATION man MAR. 3|. 19H.

2 SHEETS- SHEETl Patented Jan. 31, 1922.

L. F. KRlES.

ELECTRIC SWITCH. APPLICATION HLED MAN. 3:. m1.

1,404,865. Patented Jan. 31,1922.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

LAWRENCE F. KRIES, OF BALTIMORE, IVIILRYLAND, ASSIGNOR TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, EAST PITTSBURGH, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

ELECTRIC SWITCH.

Original application filed March 12, 1910, Serial No. 548,925.

Serial No. 158,849.

ihentsin Electric Switches, of which the 'following'is a specification.

This invention relates to electric switches, and more particularly to switches of the kind shown in my prior Patent No.

rear-e230, granted May 1, 1917.

' -In the said applicatio'npI have described and claimed a combined switch and fuseboxl The present application is a division of the-above mentioned'patent, and is based *u'pon the switch mechanism itself. 7 In designing the particular switch mechanism in question, the objects of the invention were to provide a switch construction eapable-of handling large as well as small cur rents, and to provide an actuating mecha- Q'niin which woud be easy and convenient to operate and which would serve to'move the switch members accurately, effectively, and

with a uniform force. While, as shown in my prior patent, this switching mechanism iss'espeeially adapted for use in connection with an enclosing casing, it is not by any means confined to such use, as the movement employed lends itself readily to other conditions.

In order that the invention may be "clearly understood, reference is had to the accompanying drawing, forming a part of this specification, and in which,

Fig. 1 is a longitudinal. central section through a mmhinedswitch and fuse box,

showing my improved switching mechanism, the switch being illustrated as closed;

Fig. 2 is a. similar view, the switch being shown as open;

Fig. 3 is a plan view of the box with the cover removed;

Fig. 4 is a transverse section on the line 44 of Fig. 3; and,

Fig. 5 is a perspective view of the switch ing elements and operating mechanism.

Referring to the drawings in detail, the present invention has, as above mentioned,

been illustrated in connection with the combined switch and fuse boxshown in my prior application. urh box comprises a rectangular casing 1, preferably formed of sheet Specification of Letters Patent.

Patented Jan. 31, 1922.

Divided and this application filed March metal, in which is mounted a suitable base 2, formed of slate or other insulating material. Thebox, as shown, is divided into two from the street main or other source of current enter thebox at 8. These connections preferably consist of a lead sheathed cable 9, attached by means of a conical nipple 10, the lead sheath'll being clamped by means of a ring 12, held by bolts 13. The conductors 14, of which in the present instance, three are shown, are attached to terminal screws or binding posts 15' which 'a re also secured to clips 15, constituting one set'of switch contacts.

' The switch is designated in its entirety by the letter S and comprises a plurality of switch blades or elements 16, suitably spaced and pivotally mounted at one end, as indicated at17, to-posts or clips 17 secured to the base 2. Extending from the clip 17 below the insulating strips 6 are conductors 18, which connect the clips 17 with one setof fuse terminals 20; adapted to receive cartridge fuses 19. The other set of fuse terminals is indicated at 20' and is connected with the'out-going conductors 21.

These are preferably enclosed in a conduit 22. secured to the box by means of a nipple 23 and coupling 24.

The switch compartment 5 is closed by a door 25. hinged at one end as shown. and hold closed by means of a rod 26. extending across the same and passing through eyes 27 secured to the box. A sea] 28 may be passed through a hole 26 in the end of this rod. if desired. to prevent the access of unauthorized persons to the interior of the switch box.

The free ends of the switch elements or blades 16 are rigidly secured to a cross-head 29 of insulating material, which holds the blades in their proper spaced relation. The ends of the crossheads 29 extend'beyond the outerswitch blades and are connected to arms 30 of a pair of boll crank levers 31. These lovers are pivotally mounted at 32 on the sides of the box. and it will be particularly noted that the pivot pins 32 are in sub switch elements inaccessibly mounted therein on the stationary posts and an operating mechanism for the switch comprising a pair of spaced bars having an operative connection with said switch elements and extend' outside the casing, and a handle disposed between and secured to the outer end of said bars, one wall of said casing having openings through which said bars pass.

5. In a switch of the character described the combination of a casing, a plurality of spaced, stationary contacts, a plurality of similarly spaced switch blades pivotally mounted at one end, and arranged to enga said contacts, and actuating means for said switch comprising a swingin U-shaped member pivotally mounted at lts ends on each side of and in substantial alinement with the pivot points of said switch blades, said U-shaped member being connected with said switch blades adjacent their free ends all of said parts being enclosed within said casing, and an operating member in the shape of a bail extending outside of said casing and havin its ends connected with both sides of said lisha ed member.

6. In a switch 0 the the combination of a casing, spaced, stationary contacts, similarly spaced switch blades pivotally mounted at one end and adapted to engage said contacts, and actuating means for said switch blades comprising a swinging U-shaped member pivotally supported at its ends by the walls of the casing at each side of and in substantial alinement with the pivot points of said switch blades, said U-shaped member being connected with said switch blades adjacent their free ends, all of said parts being enclosed within said casing, and an operating member extending outside of said casm and connected with said U-shaped mem er to swing the same on its pivots.

In testimony whereof I have aflixed my signature.

character described, a plurality of a plurality of LAWRENCE F. KRIES. 

